Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «S»:

S1-S5 (sacral vertebrae)S1-S5 (sacral vertebrae): The first sacral vertebra through the fifth sacral
vertebra.
There are 5 sacral vertebral bones. They are represented by the
symbols S1 through S5.
The sacral vertebrae are situated in the spinal column just below
the lumbar vertebrae and right above the coccyx, which i...

SA nodeSA node: The SA node (SA stands for sinoatrial) is one of
the major elements in the cardiac conduction system, the system that
controls the heart rate. This stunningly designed system generates
electrical impulses and conducts them throughout the muscle of the
heart, stimulating the heart to con...

SAASAA: 1.Serum amyloid A (an acute-phase protein which increases early in the course of inflammation).
2. Spondylitis Association of America (for improving the lives of people with ankylosing spondylitis and related conditions and curing these diseases)....

Sabin vaccineSabin vaccine: The oral polio vaccine developed by Dr. Albert S. Sabin.
The first vaccine against poliomyelitis was introduced by Dr. Jonas Salk in 1955 and was administered by injection (in 4 separate shots). The oral vaccine was created by Dr. Sabin the next year (in 1956) and is in standard use ...

Sabin, AlbertSabin, Albert: (1906-93) Pioneering researcher on viruses and viral diseases who developed the oral live-virus vaccine against polio. Sabin's vaccine came to be preferred over the alternative killed-virus vaccine developed by his bitter rival Dr. Jonas Salk. The Sabin vaccine contains harmless atten...

Sabin, Florence R.Sabin, Florence R.: (1871-1953) American anatomist and medical researcher. Her excellent and innovative work on the origins of the lymphatic system, blood cells, and immune system cells, and on the pathology of tuberculosis was well-recognized during her lifetime. She was also a trailblazer for wome...

SabulousSabulous: Sandy or gritty. For example, the sludge in bile may be sabulous. And the stony sediment in urine may be sabulous. From the Latin "sabulum" for "sand."...

SaccadeSaccade: Abrupt rapid small
movements of both eyes, such as when the eyes scan a line of print. The saccades
can be divided into two distinct groups: the major saccades that are easily
observed with the naked eye and the minor saccades that are virtually unobservable without special instrumentati...